This is exactly what I like to hear! Thank you for taking the time out of your day to educate me. I love to hear experiences good and bad, hopefully some S550 guys chime in even though I doubt the advice can get much better than what you've provided. Maybe differences in the platform is going to...

Thank you so much for the response and clarifying, I’m here to be educated in the areas I am not! If I do go with a 3 pass, would I need to do other cooling support mods such as water pump, coolant tank cap, hoses, etc. to support the increase in pressure? Also, w/ the oil cooler, is mounting...

Radiator: I really can’t find a definitive answer on radiator. I plan to duct the radiator once I get the proper radiator. Im just struggling to choose which radiator. Is a single pass sufficient? Is a triple pass even better but provide too much pressure and not worth it for an N/A car? Which...

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